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/* $Id: tty.c 2668 2012-01-21 19:33:45Z tcunha $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <errno.h>
#include <fcntl.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "tmux.h"
void tty_read_callback(struct bufferevent *, void *);
void tty_error_callback(struct bufferevent *, short, void *);
int tty_try_256(struct tty *, u_char, const char *);
int tty_try_88(struct tty *, u_char, const char *);
void tty_colours(struct tty *, const struct grid_cell *);
void tty_check_fg(struct tty *, struct grid_cell *);
void tty_check_bg(struct tty *, struct grid_cell *);
void tty_colours_fg(struct tty *, const struct grid_cell *);
void tty_colours_bg(struct tty *, const struct grid_cell *);
void tty_redraw_region(struct tty *, const struct tty_ctx *);
void tty_emulate_repeat(
struct tty *, enum tty_code_code, enum tty_code_code, u_int);
void tty_cell(struct tty *,
const struct grid_cell *, const struct grid_utf8 *);
#define tty_use_acs(tty) \
(tty_term_has(tty->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
void
tty_init(struct tty *tty, int fd, char *term)
{
char *path;
memset(tty, 0, sizeof *tty);
tty->log_fd = -1;
if (term == NULL || *term == '\0')
tty->termname = xstrdup("unknown");
else
tty->termname = xstrdup(term);
tty->fd = fd;
if ((path = ttyname(fd)) == NULL)
fatalx("ttyname failed");
tty->path = xstrdup(path);
tty->cstyle = 0;
tty->ccolour = xstrdup("");
tty->flags = 0;
tty->term_flags = 0;
}
int
tty_resize(struct tty *tty)
{
struct winsize ws;
u_int sx, sy;
if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
sx = ws.ws_col;
if (sx == 0)
sx = 80;
sy = ws.ws_row;
if (sy == 0)
sy = 24;
} else {
sx = 80;
sy = 24;
}
if (sx == tty->sx && sy == tty->sy)
return (0);
tty->sx = sx;
tty->sy = sy;
tty->cx = UINT_MAX;
tty->cy = UINT_MAX;
tty->rupper = UINT_MAX;
tty->rlower = UINT_MAX;
/*
* If the terminal has been started, reset the actual scroll region and
* cursor position, as this may not have happened.
*/
if (tty->flags & TTY_STARTED) {
tty_cursor(tty, 0, 0);
tty_region(tty, 0, tty->sy - 1);
}
return (1);
}
int
tty_open(struct tty *tty, const char *overrides, char **cause)
{
char out[64];
int fd;
if (debug_level > 3) {
xsnprintf(out, sizeof out, "tmux-out-%ld.log", (long) getpid());
fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
fatal("fcntl failed");
tty->log_fd = fd;
}
tty->term = tty_term_find(tty->termname, tty->fd, overrides, cause);
if (tty->term == NULL) {
tty_close(tty);
return (-1);
}
tty->flags |= TTY_OPENED;
tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_ESCAPE);
tty->event = bufferevent_new(
tty->fd, tty_read_callback, NULL, tty_error_callback, tty);
tty_start_tty(tty);
tty_keys_init(tty);
return (0);
}
/* ARGSUSED */
void
tty_read_callback(unused struct bufferevent *bufev, void *data)
{
struct tty *tty = data;
while (tty_keys_next(tty))
;
}
/* ARGSUSED */
void
tty_error_callback(
unused struct bufferevent *bufev, unused short what, unused void *data)
{
}
void
tty_start_tty(struct tty *tty)
{
struct termios tio;
if (tty->fd == -1 || tcgetattr(tty->fd, &tty->tio) != 0)
return;
setblocking(tty->fd, 0);
bufferevent_enable(tty->event, EV_READ|EV_WRITE);
memcpy(&tio, &tty->tio, sizeof tio);
tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
tio.c_iflag |= IGNBRK;
tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
ECHOPRT|ECHOKE|ECHOCTL|ISIG);
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
tcflush(tty->fd, TCIOFLUSH);
tty_putcode(tty, TTYC_SMCUP);
tty_putcode(tty, TTYC_SGR0);
memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
tty_putcode(tty, TTYC_RMKX);
if (tty_use_acs(tty))
tty_putcode(tty, TTYC_ENACS);
tty_putcode(tty, TTYC_CLEAR);
tty_putcode(tty, TTYC_CNORM);
if (tty_term_has(tty->term, TTYC_KMOUS))
tty_puts(tty, "\033[?1000l");
tty->cx = UINT_MAX;
tty->cy = UINT_MAX;
tty->rlower = UINT_MAX;
tty->rupper = UINT_MAX;
tty->mode = MODE_CURSOR;
tty->flags |= TTY_STARTED;
tty_force_cursor_colour(tty, "");
}
void
tty_stop_tty(struct tty *tty)
{
struct winsize ws;
if (!(tty->flags & TTY_STARTED))
return;
tty->flags &= ~TTY_STARTED;
bufferevent_disable(tty->event, EV_READ|EV_WRITE);
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
return;
if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
return;
setblocking(tty->fd, 1);
tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
if (tty_use_acs(tty))
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
if (tty_term_has(tty->term, TTYC_CS1) && tty->cstyle != 0) {
if (tty_term_has(tty->term, TTYC_CSR1))
tty_raw(tty, tty_term_string(tty->term, TTYC_CSR1));
else
tty_raw(tty, tty_term_string1(tty->term, TTYC_CS1, 0));
}
tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
if (tty_term_has(tty->term, TTYC_KMOUS))
tty_raw(tty, "\033[?1000l");
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
}
void
tty_close(struct tty *tty)
{
if (tty->log_fd != -1) {
close(tty->log_fd);
tty->log_fd = -1;
}
evtimer_del(&tty->key_timer);
tty_stop_tty(tty);
if (tty->flags & TTY_OPENED) {
bufferevent_free(tty->event);
tty_term_free(tty->term);
tty_keys_free(tty);
tty->flags &= ~TTY_OPENED;
}
if (tty->fd != -1) {
close(tty->fd);
tty->fd = -1;
}
}
void
tty_free(struct tty *tty)
{
tty_close(tty);
xfree(tty->ccolour);
if (tty->path != NULL)
xfree(tty->path);
if (tty->termname != NULL)
xfree(tty->termname);
}
void
tty_raw(struct tty *tty, const char *s)
{
write(tty->fd, s, strlen(s));
}
void
tty_putcode(struct tty *tty, enum tty_code_code code)
{
tty_puts(tty, tty_term_string(tty->term, code));
}
void
tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
{
if (a < 0)
return;
tty_puts(tty, tty_term_string1(tty->term, code, a));
}
void
tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
{
if (a < 0 || b < 0)
return;
tty_puts(tty, tty_term_string2(tty->term, code, a, b));
}
void
tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
{
if (a != NULL)
tty_puts(tty, tty_term_ptr1(tty->term, code, a));
}
void
tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, const void *b)
{
if (a != NULL && b != NULL)
tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
}
void
tty_puts(struct tty *tty, const char *s)
{
if (*s == '\0')
return;
bufferevent_write(tty->event, s, strlen(s));
if (tty->log_fd != -1)
write(tty->log_fd, s, strlen(s));
}
void
tty_putc(struct tty *tty, u_char ch)
{
const char *acs;
u_int sx;
if (tty->cell.attr & GRID_ATTR_CHARSET) {
acs = tty_acs_get(tty, ch);
if (acs != NULL)
bufferevent_write(tty->event, acs, strlen(acs));
else
bufferevent_write(tty->event, &ch, 1);
} else
bufferevent_write(tty->event, &ch, 1);
if (ch >= 0x20 && ch != 0x7f) {
sx = tty->sx;
if (tty->term->flags & TERM_EARLYWRAP)
sx--;
if (tty->cx >= sx) {
tty->cx = 1;
if (tty->cy != tty->rlower)
tty->cy++;
} else
tty->cx++;
}
if (tty->log_fd != -1)
write(tty->log_fd, &ch, 1);
}
void
tty_pututf8(struct tty *tty, const struct grid_utf8 *gu)
{
size_t size;
size = grid_utf8_size(gu);
bufferevent_write(tty->event, gu->data, size);
if (tty->log_fd != -1)
write(tty->log_fd, gu->data, size);
tty->cx += gu->width;
}
void
tty_set_title(struct tty *tty, const char *title)
{
if (!tty_term_has(tty->term, TTYC_TSL) ||
!tty_term_has(tty->term, TTYC_FSL))
return;
tty_putcode(tty, TTYC_TSL);
tty_puts(tty, title);
tty_putcode(tty, TTYC_FSL);
}
void
tty_force_cursor_colour(struct tty *tty, const char *ccolour)
{
if (*ccolour == '\0')
tty_putcode(tty, TTYC_CR);
else
tty_putcode_ptr1(tty, TTYC_CC, ccolour);
xfree(tty->ccolour);
tty->ccolour = xstrdup(ccolour);
}
void
tty_update_mode(struct tty *tty, int mode, struct screen *s)
{
int changed;
if (strcmp(s->ccolour, tty->ccolour))
tty_force_cursor_colour(tty, s->ccolour);
if (tty->flags & TTY_NOCURSOR)
mode &= ~MODE_CURSOR;
changed = mode ^ tty->mode;
if (changed & MODE_CURSOR) {
if (mode & MODE_CURSOR)
tty_putcode(tty, TTYC_CNORM);
else
tty_putcode(tty, TTYC_CIVIS);
}
if (tty->cstyle != s->cstyle) {
if (tty_term_has(tty->term, TTYC_CS1)) {
if (s->cstyle == 0 &&
tty_term_has(tty->term, TTYC_CSR1))
tty_putcode(tty, TTYC_CSR1);
else
tty_putcode1(tty, TTYC_CS1, s->cstyle);
}
tty->cstyle = s->cstyle;
}
if (changed & ALL_MOUSE_MODES) {
if (mode & ALL_MOUSE_MODES) {
if (mode & MODE_MOUSE_UTF8)
tty_puts(tty, "\033[?1005h");
if (mode & MODE_MOUSE_ANY)
tty_puts(tty, "\033[?1003h");
else if (mode & MODE_MOUSE_BUTTON)
tty_puts(tty, "\033[?1002h");
else if (mode & MODE_MOUSE_STANDARD)
tty_puts(tty, "\033[?1000h");
} else {
if (tty->mode & MODE_MOUSE_ANY)
tty_puts(tty, "\033[?1003l");
else if (tty->mode & MODE_MOUSE_BUTTON)
tty_puts(tty, "\033[?1002l");
else if (tty->mode & MODE_MOUSE_STANDARD)
tty_puts(tty, "\033[?1000l");
if (tty->mode & MODE_MOUSE_UTF8)
tty_puts(tty, "\033[?1005l");
}
}
if (changed & MODE_KKEYPAD) {
if (mode & MODE_KKEYPAD)
tty_putcode(tty, TTYC_SMKX);
else
tty_putcode(tty, TTYC_RMKX);
}
tty->mode = mode;
}
void
tty_emulate_repeat(
struct tty *tty, enum tty_code_code code, enum tty_code_code code1, u_int n)
{
if (tty_term_has(tty->term, code))
tty_putcode1(tty, code, n);
else {
while (n-- > 0)
tty_putcode(tty, code1);
}
}
/*
* Redraw scroll region using data from screen (already updated). Used when
* CSR not supported, or window is a pane that doesn't take up the full
* width of the terminal.
*/
void
tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i;
/*
* If region is >= 50% of the screen, just schedule a window redraw. In
* most cases, this is likely to be followed by some more scrolling -
* without this, the entire pane ends up being redrawn many times which
* can be much more data.
*/
if (ctx->orlower - ctx->orupper >= screen_size_y(s) / 2) {
wp->flags |= PANE_REDRAW;
return;
}
if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
for (i = ctx->ocy; i < screen_size_y(s); i++)
tty_draw_line(tty, s, i, wp->xoff, wp->yoff);
} else {
for (i = ctx->orupper; i <= ctx->orlower; i++)
tty_draw_line(tty, s, i, wp->xoff, wp->yoff);
}
}
void
tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy)
{
const struct grid_cell *gc;
struct grid_line *gl;
struct grid_cell tmpgc;
const struct grid_utf8 *gu;
u_int i, sx;
tty_update_mode(tty, tty->mode & ~MODE_CURSOR, s);
sx = screen_size_x(s);
if (sx > s->grid->linedata[s->grid->hsize + py].cellsize)
sx = s->grid->linedata[s->grid->hsize + py].cellsize;
if (sx > tty->sx)
sx = tty->sx;
/*
* Don't move the cursor to the start permission if it will wrap there
* itself.
*/
gl = NULL;
if (py != 0)
gl = &s->grid->linedata[s->grid->hsize + py - 1];
if (oy + py == 0 || gl == NULL || !(gl->flags & GRID_LINE_WRAPPED) ||
tty->cx < tty->sx || ox != 0 ||
(oy + py != tty->cy + 1 && tty->cy != s->rlower + oy))
tty_cursor(tty, ox, oy + py);
for (i = 0; i < sx; i++) {
gc = grid_view_peek_cell(s->grid, i, py);
gu = NULL;
if (gc->flags & GRID_FLAG_UTF8)
gu = grid_view_peek_utf8(s->grid, i, py);
if (screen_check_selection(s, i, py)) {
memcpy(&tmpgc, &s->sel.cell, sizeof tmpgc);
tmpgc.data = gc->data;
tmpgc.flags = gc->flags &
~(GRID_FLAG_FG256|GRID_FLAG_BG256);
tmpgc.flags |= s->sel.cell.flags &
(GRID_FLAG_FG256|GRID_FLAG_BG256);
tty_cell(tty, &tmpgc, gu);
} else
tty_cell(tty, gc, gu);
}
if (sx >= tty->sx) {
tty_update_mode(tty, tty->mode, s);
return;
}
tty_reset(tty);
tty_cursor(tty, ox + sx, oy + py);
if (screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL))
tty_putcode(tty, TTYC_EL);
else {
for (i = sx; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
tty_update_mode(tty, tty->mode, s);
}
void
tty_write(void (*cmdfn)(
struct tty *, const struct tty_ctx *), const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct client *c;
u_int i;
/* wp can be NULL if updating the screen but not the terminal. */
if (wp == NULL)
return;
if (wp->window->flags & WINDOW_REDRAW || wp->flags & PANE_REDRAW)
return;
if (!window_pane_visible(wp))
return;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (c->flags & CLIENT_SUSPENDED)
continue;
if (c->session->curw->window == wp->window) {
if (c->tty.term == NULL)
continue;
if (c->tty.flags & (TTY_FREEZE|TTY_BACKOFF))
continue;
cmdfn(&c->tty, ctx);
}
}
}
void
tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx) {
tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff);
return;
}
tty_reset(tty);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
if (tty_term_has(tty->term, TTYC_ICH) ||
tty_term_has(tty->term, TTYC_ICH1))
tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
else if (tty_term_has(tty->term, TTYC_SMIR) &&
tty_term_has(tty->term, TTYC_RMIR)) {
tty_putcode(tty, TTYC_SMIR);
for (i = 0; i < ctx->num; i++)
tty_putc(tty, ' ');
tty_putcode(tty, TTYC_RMIR);
} else
tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff);
}
void
tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
(!tty_term_has(tty->term, TTYC_DCH) &&
!tty_term_has(tty->term, TTYC_DCH1))) {
tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff);
return;
}
tty_reset(tty);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
if (tty_term_has(tty->term, TTYC_DCH) ||
tty_term_has(tty->term, TTYC_DCH1))
tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
}
void
tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
!tty_term_has(tty->term, TTYC_CSR) ||
!tty_term_has(tty->term, TTYC_IL1)) {
tty_redraw_region(tty, ctx);
return;
}
tty_reset(tty);
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
}
void
tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
!tty_term_has(tty->term, TTYC_CSR) ||
!tty_term_has(tty->term, TTYC_DL1)) {
tty_redraw_region(tty, ctx);
return;
}
tty_reset(tty);
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
}
void
tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i;
tty_reset(tty);
tty_cursor_pane(tty, ctx, 0, ctx->ocy);
if (wp->xoff == 0 && screen_size_x(s) >= tty->sx &&
tty_term_has(tty->term, TTYC_EL)) {
tty_putcode(tty, TTYC_EL);
} else {
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
void
tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i;
tty_reset(tty);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
if (wp->xoff == 0 && screen_size_x(s) >= tty->sx &&
tty_term_has(tty->term, TTYC_EL))
tty_putcode(tty, TTYC_EL);
else {
for (i = ctx->ocx; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
void
tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
u_int i;
tty_reset(tty);
if (wp->xoff == 0 && tty_term_has(tty->term, TTYC_EL1)) {
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_putcode(tty, TTYC_EL1);
} else {
tty_cursor_pane(tty, ctx, 0, ctx->ocy);
for (i = 0; i < ctx->ocx + 1; i++)
tty_putc(tty, ' ');
}
}
void
tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
if (ctx->ocy != ctx->orupper)
return;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
!tty_term_has(tty->term, TTYC_CSR) ||
!tty_term_has(tty->term, TTYC_RI)) {
tty_redraw_region(tty, ctx);
return;
}
tty_reset(tty);
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
tty_putcode(tty, TTYC_RI);
}
void
tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
if (ctx->ocy != ctx->orlower)
return;
if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
!tty_term_has(tty->term, TTYC_CSR)) {
tty_redraw_region(tty, ctx);
return;
}
/*
* If this line wrapped naturally (ctx->num is nonzero), don't do
* anything - the cursor can just be moved to the last cell and wrap
* naturally.
*/
if (ctx->num && !(tty->term->flags & TERM_EARLYWRAP))
return;
tty_reset(tty);
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_putc(tty, '\n');
}
void
tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i, j;
tty_reset(tty);
tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
if (wp->xoff == 0 && screen_size_x(s) >= tty->sx &&
tty_term_has(tty->term, TTYC_EL)) {
tty_putcode(tty, TTYC_EL);
if (ctx->ocy != screen_size_y(s) - 1) {
tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
for (i = ctx->ocy + 1; i < screen_size_y(s); i++) {
tty_putcode(tty, TTYC_EL);
if (i == screen_size_y(s) - 1)
continue;
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
tty->cy++;
}
}
} else {
for (i = ctx->ocx; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
for (j = ctx->ocy + 1; j < screen_size_y(s); j++) {
tty_cursor_pane(tty, ctx, 0, j);
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
}
void
tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i, j;
tty_reset(tty);
tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
tty_cursor_pane(tty, ctx, 0, 0);
if (wp->xoff == 0 && screen_size_x(s) >= tty->sx &&
tty_term_has(tty->term, TTYC_EL)) {
for (i = 0; i < ctx->ocy; i++) {
tty_putcode(tty, TTYC_EL);
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
tty->cy++;
}
} else {
for (j = 0; j < ctx->ocy; j++) {
tty_cursor_pane(tty, ctx, 0, j);
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
for (i = 0; i <= ctx->ocx; i++)
tty_putc(tty, ' ');
}
void
tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i, j;
tty_reset(tty);
tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
tty_cursor_pane(tty, ctx, 0, 0);
if (wp->xoff == 0 && screen_size_x(s) >= tty->sx &&
tty_term_has(tty->term, TTYC_EL)) {
for (i = 0; i < screen_size_y(s); i++) {
tty_putcode(tty, TTYC_EL);
if (i != screen_size_y(s) - 1) {
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
tty->cy++;
}
}
} else {
for (j = 0; j < screen_size_y(s); j++) {
tty_cursor_pane(tty, ctx, 0, j);
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
}
void
tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int i, j;
tty_reset(tty);
tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
for (j = 0; j < screen_size_y(s); j++) {
tty_cursor_pane(tty, ctx, 0, j);
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, 'E');
}
}
void
tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
u_int cx;
u_int width;
const struct grid_cell *gc = ctx->cell;
const struct grid_utf8 *gu = ctx->utf8;
if (gc->flags & GRID_FLAG_UTF8)
width = gu->width;
else
width = 1;
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
/* Is the cursor in the very last position? */
if (ctx->ocx > wp->sx - width) {
if (wp->xoff != 0 || wp->sx != tty->sx) {
/*
* The pane doesn't fill the entire line, the linefeed
* will already have happened, so just move the cursor.
*/
tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
} else if (tty->cx < tty->sx) {
/*
* The cursor isn't in the last position already, so
* move as far left as possible and redraw the last
* cell to move into the last position.
*/
if (ctx->last_cell.flags & GRID_FLAG_UTF8)
cx = screen_size_x(s) - ctx->last_utf8.width;
else
cx = screen_size_x(s) - 1;
tty_cursor_pane(tty, ctx, cx, ctx->ocy);
tty_cell(tty, &ctx->last_cell, &ctx->last_utf8);
}
} else
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_cell(tty, ctx->cell, ctx->utf8);
}
void
tty_cmd_utf8character(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
/*
* Cannot rely on not being a partial character, so just redraw the
* whole line.
*/
tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff);
}
void
tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
{
char *buf;
size_t off;
if (!tty_term_has(tty->term, TTYC_MS))
return;
off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
buf = xmalloc(off);
b64_ntop(ctx->ptr, ctx->num, buf, off);
tty_putcode_ptr2(tty, TTYC_MS, "", buf);
xfree(buf);
}
void
tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
{
u_int i;
u_char *str = ctx->ptr;
for (i = 0; i < ctx->num; i++)
tty_putc(tty, str[i]);
}
void
tty_cell(
struct tty *tty, const struct grid_cell *gc, const struct grid_utf8 *gu)
{
u_int i;
/* Skip last character if terminal is stupid. */
if (tty->term->flags & TERM_EARLYWRAP &&
tty->cy == tty->sy - 1 && tty->cx == tty->sx - 1)
return;
/* If this is a padding character, do nothing. */
if (gc->flags & GRID_FLAG_PADDING)
return;
/* Set the attributes. */
tty_attributes(tty, gc);
/* If not UTF-8, write directly. */
if (!(gc->flags & GRID_FLAG_UTF8)) {
if (gc->data < 0x20 || gc->data == 0x7f)
return;
tty_putc(tty, gc->data);
return;
}
/* If the terminal doesn't support UTF-8, write underscores. */
if (!(tty->flags & TTY_UTF8)) {
for (i = 0; i < gu->width; i++)
tty_putc(tty, '_');
return;
}
/* Otherwise, write UTF-8. */
tty_pututf8(tty, gu);
}
void
tty_reset(struct tty *tty)
{
struct grid_cell *gc = &tty->cell;
if (memcmp(gc, &grid_default_cell, sizeof *gc) == 0)
return;
if ((gc->attr & GRID_ATTR_CHARSET) && tty_use_acs(tty))
tty_putcode(tty, TTYC_RMACS);
tty_putcode(tty, TTYC_SGR0);
memcpy(gc, &grid_default_cell, sizeof *gc);
}
/* Set region inside pane. */
void
tty_region_pane(
struct tty *tty, const struct tty_ctx *ctx, u_int rupper, u_int rlower)
{
struct window_pane *wp = ctx->wp;
tty_region(tty, wp->yoff + rupper, wp->yoff + rlower);
}
/* Set region at absolute position. */
void
tty_region(struct tty *tty, u_int rupper, u_int rlower)
{
if (tty->rlower == rlower && tty->rupper == rupper)
return;
if (!tty_term_has(tty->term, TTYC_CSR))
return;
tty->rupper = rupper;
tty->rlower = rlower;
/*
* Some terminals (such as PuTTY) do not correctly reset the cursor to
* 0,0 if it is beyond the last column (they do not reset their wrap
* flag so further output causes a line feed). As a workaround, do an
* explicit move to 0 first.
*/
if (tty->cx >= tty->sx)
tty_cursor(tty, 0, tty->cy);
tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
tty_cursor(tty, 0, 0);
}
/* Move cursor inside pane. */
void
tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
{
struct window_pane *wp = ctx->wp;
tty_cursor(tty, wp->xoff + cx, wp->yoff + cy);
}
/* Move cursor to absolute position. */
void
tty_cursor(struct tty *tty, u_int cx, u_int cy)
{
struct tty_term *term = tty->term;
u_int thisx, thisy;
int change;
if (cx > tty->sx - 1)
cx = tty->sx - 1;
thisx = tty->cx;
thisy = tty->cy;
/* No change. */
if (cx == thisx && cy == thisy)
return;
/* Very end of the line, just use absolute movement. */
if (thisx > tty->sx - 1)
goto absolute;
/* Move to home position (0, 0). */
if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
tty_putcode(tty, TTYC_HOME);
goto out;
}
/* Zero on the next line. */
if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower) {
tty_putc(tty, '\r');
tty_putc(tty, '\n');
goto out;
}
/* Moving column or row. */
if (cy == thisy) {
/*
* Moving column only, row staying the same.
*/
/* To left edge. */
if (cx == 0) {
tty_putc(tty, '\r');
goto out;
}
/* One to the left. */
if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
tty_putcode(tty, TTYC_CUB1);
goto out;
}
/* One to the right. */
if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
tty_putcode(tty, TTYC_CUF1);
goto out;
}
/* Calculate difference. */
change = thisx - cx; /* +ve left, -ve right */
/*
* Use HPA if change is larger than absolute, otherwise move
* the cursor with CUB/CUF.
*/
if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
tty_putcode1(tty, TTYC_HPA, cx);
goto out;
} else if (change > 0 && tty_term_has(term, TTYC_CUB)) {
tty_putcode1(tty, TTYC_CUB, change);
goto out;
} else if (change < 0 && tty_term_has(term, TTYC_CUF)) {
tty_putcode1(tty, TTYC_CUF, -change);
goto out;
}
} else if (cx == thisx) {
/*
* Moving row only, column staying the same.
*/
/* One above. */
if (thisy != tty->rupper &&
cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
tty_putcode(tty, TTYC_CUU1);
goto out;
}
/* One below. */
if (thisy != tty->rlower &&
cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
tty_putcode(tty, TTYC_CUD1);
goto out;
}
/* Calculate difference. */
change = thisy - cy; /* +ve up, -ve down */
/*
* Try to use VPA if change is larger than absolute or if this
* change would cross the scroll region, otherwise use CUU/CUD.
*/
if ((u_int) abs(change) > cy ||
(change < 0 && cy - change > tty->rlower) ||
(change > 0 && cy - change < tty->rupper)) {
if (tty_term_has(term, TTYC_VPA)) {
tty_putcode1(tty, TTYC_VPA, cy);
goto out;
}
} else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
tty_putcode1(tty, TTYC_CUU, change);
goto out;
} else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
tty_putcode1(tty, TTYC_CUD, -change);
goto out;
}
}
absolute:
/* Absolute movement. */
tty_putcode2(tty, TTYC_CUP, cy, cx);
out:
tty->cx = cx;
tty->cy = cy;
}
void
tty_attributes(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell, gc2;
u_char changed;
memcpy(&gc2, gc, sizeof gc2);
/*
* If no setab, try to use the reverse attribute as a best-effort for a
* non-default background. This is a bit of a hack but it doesn't do
* any serious harm and makes a couple of applications happier.
*/
if (!tty_term_has(tty->term, TTYC_SETAB)) {
if (gc2.attr & GRID_ATTR_REVERSE) {
if (gc2.fg != 7 && gc2.fg != 8)
gc2.attr &= ~GRID_ATTR_REVERSE;
} else {
if (gc2.bg != 0 && gc2.bg != 8)
gc2.attr |= GRID_ATTR_REVERSE;
}
}
/* Fix up the colours if necessary. */
tty_check_fg(tty, &gc2);
tty_check_bg(tty, &gc2);
/* If any bits are being cleared, reset everything. */
if (tc->attr & ~gc2.attr)
tty_reset(tty);
/*
* Set the colours. This may call tty_reset() (so it comes next) and
* may add to (NOT remove) the desired attributes by changing new_attr.
*/
tty_colours(tty, &gc2);
/* Filter out attribute bits already set. */
changed = gc2.attr & ~tc->attr;
tc->attr = gc2.attr;
/* Set the attributes. */
if (changed & GRID_ATTR_BRIGHT)
tty_putcode(tty, TTYC_BOLD);
if (changed & GRID_ATTR_DIM)
tty_putcode(tty, TTYC_DIM);
if (changed & GRID_ATTR_ITALICS)
{
if (tty_term_has(tty->term, TTYC_SITM))
tty_putcode(tty, TTYC_SITM);
else
tty_putcode(tty, TTYC_SMSO);
}
if (changed & GRID_ATTR_UNDERSCORE)
tty_putcode(tty, TTYC_SMUL);
if (changed & GRID_ATTR_BLINK)
tty_putcode(tty, TTYC_BLINK);
if (changed & GRID_ATTR_REVERSE) {
if (tty_term_has(tty->term, TTYC_REV))
tty_putcode(tty, TTYC_REV);
else if (tty_term_has(tty->term, TTYC_SMSO))
tty_putcode(tty, TTYC_SMSO);
}
if (changed & GRID_ATTR_HIDDEN)
tty_putcode(tty, TTYC_INVIS);
if ((changed & GRID_ATTR_CHARSET) && tty_use_acs(tty))
tty_putcode(tty, TTYC_SMACS);
}
void
tty_colours(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell;
u_char fg = gc->fg, bg = gc->bg, flags = gc->flags;
int have_ax, fg_default, bg_default;
/* No changes? Nothing is necessary. */
if (fg == tc->fg && bg == tc->bg &&
((flags ^ tc->flags) & (GRID_FLAG_FG256|GRID_FLAG_BG256)) == 0)
return;
/*
* Is either the default colour? This is handled specially because the
* best solution might be to reset both colours to default, in which
* case if only one is default need to fall onward to set the other
* colour.
*/
fg_default = (fg == 8 && !(flags & GRID_FLAG_FG256));
bg_default = (bg == 8 && !(flags & GRID_FLAG_BG256));
if (fg_default || bg_default) {
/*
* If don't have AX but do have op, send sgr0 (op can't
* actually be used because it is sometimes the same as sgr0
* and sometimes isn't). This resets both colours to default.
*
* Otherwise, try to set the default colour only as needed.
*/
have_ax = tty_term_has(tty->term, TTYC_AX);
if (!have_ax && tty_term_has(tty->term, TTYC_OP))
tty_reset(tty);
else {
if (fg_default &&
(tc->fg != 8 || tc->flags & GRID_FLAG_FG256)) {
if (have_ax)
tty_puts(tty, "\033[39m");
else if (tc->fg != 7 ||
tc->flags & GRID_FLAG_FG256)
tty_putcode1(tty, TTYC_SETAF, 7);
tc->fg = 8;
tc->flags &= ~GRID_FLAG_FG256;
}
if (bg_default &&
(tc->bg != 8 || tc->flags & GRID_FLAG_BG256)) {
if (have_ax)
tty_puts(tty, "\033[49m");
else if (tc->bg != 0 ||
tc->flags & GRID_FLAG_BG256)
tty_putcode1(tty, TTYC_SETAB, 0);
tc->bg = 8;
tc->flags &= ~GRID_FLAG_BG256;
}
}
}
/* Set the foreground colour. */
if (!fg_default && (fg != tc->fg ||
((flags & GRID_FLAG_FG256) != (tc->flags & GRID_FLAG_FG256))))
tty_colours_fg(tty, gc);
/*
* Set the background colour. This must come after the foreground as
* tty_colour_fg() can call tty_reset().
*/
if (!bg_default && (bg != tc->bg ||
((flags & GRID_FLAG_BG256) != (tc->flags & GRID_FLAG_BG256))))
tty_colours_bg(tty, gc);
}
void
tty_check_fg(struct tty *tty, struct grid_cell *gc)
{
u_int colours;
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_FG256) {
/* And not a 256 colour mode? */
if (!(tty->term->flags & TERM_88COLOURS) &&
!(tty->term_flags & TERM_88COLOURS) &&
!(tty->term->flags & TERM_256COLOURS) &&
!(tty->term_flags & TERM_256COLOURS)) {
gc->fg = colour_256to16(gc->fg);
if (gc->fg & 8) {
gc->fg &= 7;
gc->attr |= GRID_ATTR_BRIGHT;
} else
gc->attr &= ~GRID_ATTR_BRIGHT;
gc->flags &= ~GRID_FLAG_FG256;
}
return;
}
/* Is this an aixterm colour? */
colours = tty_term_number(tty->term, TTYC_COLORS);
if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
gc->fg -= 90;
gc->attr |= GRID_ATTR_BRIGHT;
}
}
void
tty_check_bg(struct tty *tty, struct grid_cell *gc)
{
u_int colours;
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_BG256) {
/*
* And not a 256 colour mode? Translate to 16-colour
* palette. Bold background doesn't exist portably, so just
* discard the bold bit if set.
*/
if (!(tty->term->flags & TERM_88COLOURS) &&
!(tty->term_flags & TERM_88COLOURS) &&
!(tty->term->flags & TERM_256COLOURS) &&
!(tty->term_flags & TERM_256COLOURS)) {
gc->bg = colour_256to16(gc->bg);
if (gc->bg & 8)
gc->bg &= 7;
gc->attr &= ~GRID_ATTR_BRIGHT;
gc->flags &= ~GRID_FLAG_BG256;
}
return;
}
/* Is this an aixterm colour? */
colours = tty_term_number(tty->term, TTYC_COLORS);
if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) {
gc->bg -= 90;
gc->attr |= GRID_ATTR_BRIGHT;
}
}
void
tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell;
u_char fg = gc->fg;
char s[32];
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_FG256) {
/* Try as 256 colours or translating to 88. */
if (tty_try_256(tty, fg, "38") == 0)
goto save_fg;
if (tty_try_88(tty, fg, "38") == 0)
goto save_fg;
/* Else already handled by tty_check_fg. */
return;
}
/* Is this an aixterm bright colour? */
if (fg >= 90 && fg <= 97) {
xsnprintf(s, sizeof s, "\033[%dm", fg);
tty_puts(tty, s);
goto save_fg;
}
/* Otherwise set the foreground colour. */
tty_putcode1(tty, TTYC_SETAF, fg);
save_fg:
/* Save the new values in the terminal current cell. */
tc->fg = fg;
tc->flags &= ~GRID_FLAG_FG256;
tc->flags |= gc->flags & GRID_FLAG_FG256;
}
void
tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell;
u_char bg = gc->bg;
char s[32];
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_BG256) {
/* Try as 256 colours or translating to 88. */
if (tty_try_256(tty, bg, "48") == 0)
goto save_bg;
if (tty_try_88(tty, bg, "48") == 0)
goto save_bg;
/* Else already handled by tty_check_bg. */
return;
}
/* Is this an aixterm bright colour? */
if (bg >= 90 && bg <= 97) {
/* 16 colour terminals or above only. */
if (tty_term_number(tty->term, TTYC_COLORS) >= 16) {
xsnprintf(s, sizeof s, "\033[%dm", bg + 10);
tty_puts(tty, s);
goto save_bg;
}
bg -= 90;
/* no such thing as a bold background */
}
/* Otherwise set the background colour. */
tty_putcode1(tty, TTYC_SETAB, bg);
save_bg:
/* Save the new values in the terminal current cell. */
tc->bg = bg;
tc->flags &= ~GRID_FLAG_BG256;
tc->flags |= gc->flags & GRID_FLAG_BG256;
}
int
tty_try_256(struct tty *tty, u_char colour, const char *type)
{
char s[32];
if (!(tty->term->flags & TERM_256COLOURS) &&
!(tty->term_flags & TERM_256COLOURS))
return (-1);
xsnprintf(s, sizeof s, "\033[%s;5;%hhum", type, colour);
tty_puts(tty, s);
return (0);
}
int
tty_try_88(struct tty *tty, u_char colour, const char *type)
{
char s[32];
if (!(tty->term->flags & TERM_88COLOURS) &&
!(tty->term_flags & TERM_88COLOURS))
return (-1);
colour = colour_256to88(colour);
xsnprintf(s, sizeof s, "\033[%s;5;%hhum", type, colour);
tty_puts(tty, s);
return (0);
}
void
tty_bell(struct tty *tty)
{
tty_putcode(tty, TTYC_BEL);
}